terminal in QtCreator cannot output qDebug and std::cout content

The code is as follows:

#include <iostream>
#include <QDebug>

using namespace std;

int main(int argc, char *argv[])
{
    cout << "Hello World!" << endl;
    qDebug() << "xxxxx";
    return 0;
} 

Qt Creator 15.0.1：Screen Recording 2025-03-25 092600.mp4

As you can see in the video attachment, it has been run three times in total: the first time it can output normally, but the second and third times it cannot. 

During my testing process, sometimes I can receive the output of qDebug, and sometimes I can receive std::cout output, but most of the time both are not received.

Qt Creator 16.0.0: Qt Creator 16.0.mp4

On version 16.0.0, information can be displayed after several attempts, but it is not displayed correctly in many cases.